Preparation method of nonferrous alloy anti-corrosion layer

The invention provides a preparation method of a nonferrous alloy anti-corrosion layer. The preparation method comprises the following steps of raw material proportioning of a sol-gel solution, sol preparing, preparing of the sol-gel solution, film layer dipping and film layer drying. According to the method, sol-gel solution hole sealing is carried out on the porous microarc oxidization film, aneven film layer is obtained, surface clearances are reduced, binding force and smoothness are better, the coverage rate of a ceramic layer after nonferrous alloy oxidization is improved, the functionof hole sealing is achieved, the anti-friction function is also achieved, and the defects of surface needle holes, cracks and the like are overcome. 本发明提供一种有色合金防腐层的制备方法，包括以下步骤：溶胶-凝胶溶液的原料配比、溶胶的制备、溶胶-凝胶溶液的制备、膜层浸渍、膜层干燥，本发明的方法在多孔的微弧氧化表面进行溶胶-凝胶溶液封孔，得到均匀的膜层，减少表面缝隙，结合力和光滑度更好，提高有色合金氧化后陶瓷层的覆盖率，即起到了封孔作用，又起到减摩作用，克服了表面针眼、裂纹等缺陷。